The extent to which the Obama administration represents a meaningful policy change from Bush is somewhat debatable, but the change in tone is already very clear. Pete Seeger and Bruce Springsteen helped to set that tone on Sunday with a version of Woody Guthrie's "This land is your land" that included some of the lyrics that are usually edited out.
My favourite line:
There was a big ole sign there
Said "private property"
but on the other side
it didn't say nothing
That side was made for you and me
The performance is below and you can click on the picture above to learn more about Woody Guthrie.